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radaballer
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To do this would you simply run the current from one battery through another in reverse? Would there be a significant loss in energy?
radaballer said:To do this would you simply run the current from one battery through another in reverse? Would there be a significant loss in energy?
Ok, what about a capacitor charging a capacitor? And would charge be lost?berkeman said:As mfb says, not directly. But there are battery-based battery chargers that have circuitry inside that makes the charging process safe and relatively efficient:
http://www.schoolmart.com/images/products/detail/EVOPowerPlusintocell.jpg
http://www.schoolmart.com/images/products/detail/EVOPowerPlusintocell.jpg
radaballer said:Ok, what about a capacitor charging a capacitor? And would charge be lost?
Ok lastly, what happens if you add two different quantities of charge with different voltages to a single capacitor? How would they come out in the discharge of the capacitor?berkeman said:Charge is conserved, but some energy is lost in the transfer of charge from one capacitor to another. In fact, it is a common FAQ to figure out where the energy goes...
That question does not make sense. You cannot "add a charge of X at voltage Y", the voltage is determined by the amount of charge and the capacitance (and it changes during the charging process).radaballer said:Ok lastly, what happens if you add two different quantities of charge with different voltages to a single capacitor?
sorry, If i charge a capacitor with a 12 volt battery for 30 seconds, then I charge it with a 9 volt battery for 30 seconds, what voltage will come back out of the capacitor? Hope that makes more sense.mfb said:That question does not make sense.
It might be more relevant to ask how much smoke will come out of the battery.radaballer said:what voltage will come back out of the capacitor?
radaballer said:sorry, If i charge a capacitor with a 12 volt battery for 30 seconds, then I charge it with a 9 volt battery for 30 seconds, what voltage will come back out of the capacitor? Hope that makes more sense.
Do we know where the energy goes?berkeman said:Charge is conserved, but some energy is lost in the transfer of charge from one capacitor to another. In fact, it is a common FAQ to figure out where the energy goes...
radaballer said:Do we know where the energy goes?
You need higher potential to charge a battery. So if you are charging a 12V battery you would need 13-14V of any current throughput to charge that 12V bat.radaballer said:To do this would you simply run the current from one battery through another in reverse? Would there be a significant loss in energy?
Is there a way to calculate the energy lost through oscillations? If so can you show me or direct me to a link? Thanks for the help sirberkeman said:Yes we do.
MrAnchovy said:It might be more relevant to ask how much smoke will come out of the battery.
Yes, it is possible to charge a battery by connecting it to another battery. This process is known as "jumpstarting" and is commonly used for car batteries.
In most cases, it is safe to charge a battery with another battery. However, it is important to follow proper safety precautions and make sure the batteries are compatible. Using the wrong type of battery or connecting them incorrectly can be dangerous.
The type of battery that can be used to charge another battery depends on the specific batteries in question. In general, it is best to use a battery with a higher voltage and capacity than the one being charged. For example, a car battery can be used to charge a smaller battery, but not the other way around.
The time it takes to charge a battery with another battery can vary depending on several factors, such as the capacity and voltage of the batteries, the charging method, and the condition of the batteries. In general, it can take anywhere from a few minutes to several hours.
In most cases, it is possible to charge a completely dead battery with another battery. However, it may take longer and may not be as effective as using a proper battery charger. It is important to make sure the dead battery is compatible with the battery being used to charge it and to follow proper safety precautions.